<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/Welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
  <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
          <el-col :span="8">
            <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
              <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
            </el-input>
          </el-col>
           <el-col :span="4">
            <el-button type="primary" round @click="addDialogVisible = true">添加用户</el-button>
          </el-col>
        </el-row>

    <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="username" label="姓名" width="180"></el-table-column>
        <el-table-column prop="mobile" label="电话" width="180"></el-table-column>
        <el-table-column prop="email" label="邮箱" width="180"></el-table-column>
        <el-table-column prop="role_name" label="角色" width="180"></el-table-column>
        <el-table-column label="状态" width="180">
          <!-- 状态列的作用域插槽 -->
           <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)" active-color="#13ce66" inactive-color="#ff4949"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" round icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" round icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" round icon="el-icon-setting" size="mini" @click="showAllcoateRoleDialog(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1, 2, 5, 10]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%"
    @close="addDialogClosed">
    <!-- 内容主题区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
        <el-input v-model="addForm.username"></el-input>
        </el-form-item>
         <el-form-item label="密码" prop="password">
        <el-input v-model="addForm.password"></el-input>
        </el-form-item>
         <el-form-item label="邮箱" prop="email">
        <el-input v-model="addForm.email"></el-input>
        </el-form-item>
         <el-form-item label="手机" prop="mobile">
        <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
    <!-- 底部区域 -->
    <span slot="footer" class="dialog-footer">
      <el-button @click="addDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
   </el-dialog>

   <!-- 添加用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%" @close="editDialogClosed">
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="70px">
        <el-form-item label="名称">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- -->
    <el-dialog
    title="分配角色"
    :visible.sync="allocateRoleDialogVisible"
    width="50%" @close="allocateRoleDialogClosed">
     <div>
      <p>当前用户：{{ userInfo.username }}</p>
      <p>当前角色：{{ userInfo.role_name }}</p>
      <p>分配新角色:
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
          </el-option>
        </el-select>
      </p>
     </div>
    <span slot="footer" class="dialog-footer">
      <el-button @click="allocateRoleDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    // 验证邮箱的规则
    var validateEmail = (rule, value, callback) => {
      // 验证邮箱的正则表达式
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if (!regEmail.test(value)) {
        callback(new Error('请输入合法的邮箱'))
      }
      // 合法的邮箱
      callback()
    }
    // 验证手机号的规则
    var validateMobile = (rule, value, callback) => {
      // 验证手机号的正则表达式
      const regMobile = /^1[34578]\d{9}$/
      if (!regMobile.test(value)) {
        callback(new Error('请输入合法的手机号'))
      }
      // 合法的手机号
      callback()
    }
    return {
      queryInfo: {
        query: '',
        // 当前的页数
        pagenum: 1,
        // 当前每页显示多少条数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 20, message: '用户名的长度在3~20个字符之间', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: validateEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: validateMobile, trigger: 'blur' }
        ]
      },
      // 控制用户编辑对话框的显示
      editDialogVisible: false,
      // 查询到的用户信息
      editForm: {},
      // 修改表单的验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: validateEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          { validator: validateMobile, trigger: 'blur' }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      allocateRoleDialogVisible: false,
      // 需要分配角色的用户信息
      userInfo: {},
      // 角色列表
      rolesList: [],
      // 当前已选中的角色id
      selectedRoleId: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败！')
      }
      this.userList = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 pagesize改变的事件
    handleSizeChange (newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (newcurrentPage) {
      console.log(newcurrentPage)
      this.queryInfo.pagenum = newcurrentPage
      this.getUserList()
    },
    // 监听 switch 开关状态的改变
    async userStateChanged (userInfo) {
      // console.log(userInfo)
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败！')
      }
      this.$message.success('更新用户状态成功！')
    },
    // 监听 添加用户对话框的关闭事件
    // 关闭添加用户对话框后，重置所有字段
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 点击确定按钮时添加用户弹出框
    addUser () {
      this.$refs.addFormRef.validate(async (valid) => {
        if (!valid) {
          this.$message.error('请填写完整用户信息!')
        }
        // 可以发起添加用户的网路请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.data.status !== 201) {
          console.log(res)
          return this.$message.error(res.meta.msg)
        }
        // 添加成功的提示
        this.$message.success('添加用户成功！')
        // 关闭对话框
        this.addDialogVisible = false
        // 重新请求最新的数据
        this.getUserList()
      })
    },
    // 展示编辑用户对话框
    async showEditDialog (id) {
      // console.log(id)
      const { data: res } = await this.$http.get(`/users/${id}`)
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败!')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return this.$message.error('修改用户校验失败！')
        }
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败！')
        }
        // 关闭编辑对话框
        this.editDialogVisible = false
        // 刷新用户数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    // 根据用户id删除对应的用户
    async removeUserById (id) {
      // 弹框用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值为字符串 confirm
      // 如果用户取消了删除按钮，则返回值字符串 cancel
      console.log(confirmResult)
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const { data: res } = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户' + id + '失败!')
      }
      this.$message({
        type: 'success',
        message: '删除用户成功!'
      })
      // 刷新用户列表
      this.getUserList()
    },
    // 展示为用户分配角色的对话框
    async showAllcoateRoleDialog (userInfo) {
      // 获取用户信息
      this.userInfo = userInfo
      // 在展示对话框之前获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        this.$message.error('获取角色列表信息失败！')
      }
      this.rolesList = res.data
      console.log(this.roleList)
      this.allocateRoleDialogVisible = true
    },
    // 点击分配角色按钮，分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        this.$message.error('请选择要分配的角色')
      }
      console.log('当前用户的id:' + this.userInfo.id)
      console.log('选择的角色id:' + this.selectedRoleId)
      // 保存数据到数据库
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) {
        this.$message.error(res.meta.msg)
      }
      this.$message.success('为用户' + this.userInfo.username + '更新角色成功!')
      // 刷新用户列表
      this.getUserList()
      // 隐藏为用户分配角色的对话框
      this.allocateRoleDialogVisible = false
    },
    // 监听分配角色对话框的关闭事件
    allocateRoleDialogClosed () {
      // 重置下拉框的内容
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>

<style lang="less" scoped>

</style>
